Justin Bieber and Hailey Baldwin aboard S.S. PDA in Italy

Justin Bieber and Hailey Baldwin are getting naughty-cal.

The recently engaged couple was seen smooching aboard a yacht off Italy’s Amalfi Coast on Friday.

Baldwin, 21, showed off her fit figure in a tiny black bikini, while Bieber, 24, displayed his many tattoos in nothing more than gray swim shorts and a baseball cap.

The pair were in town during Milan Fashion Week just weeks after spurring marriage rumors after a trip to a New York City courthouse.

While they may not have tied the knot, it’s still been smooth sailing for Bieber and Baldwin, who have been spotted all over each other the past few months.